package edu.sctu.practice.class02.Wangpeng.Assign04;

/**
 * Created by wp on 2015/11/5.
 */
public abstract class Course {
    public  void On(){
        System.out.println("打开电脑");
    };

    public abstract void ListonCourse();


    public void Off(){
        System.out.println("关闭电脑");
    };
}